Hi Dan,
I'm not really sure but the original carby design had many design faults in it I'm thinking that Victa were just being too smart after long lunches at the pub. I had a bloke ring today saying his PT24 inch was constantly revving too high and this is a very common problem with the PT's don't hear much about F/C's having these problems. Trust me I don't spend a couple of hours modifying each carby for the hell of it and if I had a better way of making them reliable I certainly would
